@DankGardener, I believe so. They did a similar cross of strains once before. I've had these seeds for a while Hexus grew some mosters via hydro which is her deal. It's very difficult to get Mephisto they usually release only a couple of times a year then sell out in hours. Seems almost like they are creating an artificial shortage to keep their prices high.
Following your lead on this one buddy, and watching closely. I'm happy to see you have the Canna Rhizo as I was directed to pick up the rhizo xp for seedlings to create a happy/heathy rhizosphere👍. Picked up some ProMix as well and won't subject the little ones to such a heavy super soil right off the back. Thanks for your help man, and for real, I'm watching this close to see if I can replicate your results. If not, I'll keep trying and bugging you with questions😀. Cheers dude and happy trails